MongoDB vs. Postgres; A specific use case

I’ve recently taken a job at Ansible working on the enterprise offering Tower. In case you don’t know, Tower is a front-end for your Ansible playbooks w/ enterprise permission management. I was tasked with evaluating our database needs for a new System Tracking feature that we released. Working remotely at the time forced me to create detailed presentations on my progress and evaluation. I ended up taking the internal presentations and created a blog post about the evaluation process.

http://www.ansible.com/blog/how-we-chose-mongodb-for-ansible-tower-system-tracking-feature